Benchmark study on glyphosate-resistant cropping systems in the United States. Part 4: Weed management practices and effects on weed populations and soil seedbanks

2011 ◽  
Vol 67 (7) ◽  
pp. 771-780 ◽  
Author(s):  
Robert G Wilson ◽  
Bryan G Young ◽  
Joseph L Matthews ◽  
Stephen C Weller ◽  
William G Johnson ◽  
...  
Keyword(s):  
United States ◽  
Weed Management ◽  
Management Practices ◽  
Cropping Systems ◽  
The United States ◽  
Benchmark Study

Benchmark study on glyphosate-resistant cropping systems in the United States. Part 5: Effects of glyphosate-based weed management programs on farm-level profitability

2011 ◽  
Vol 67 (7) ◽  
pp. 781-784 ◽  
Author(s):  
Jason W Weirich ◽  
David R Shaw ◽  
Micheal DK Owen ◽  
Philip M Dixon ◽  
Stephen C Weller ◽  
...  
Keyword(s):  
United States ◽  
Weed Management ◽  
Cropping Systems ◽  
The United States ◽  
Farm Level ◽  
Benchmark Study ◽  
On Farm

Benchmark Study: IV. Survey of Grower Practices for Managing Glyphosate-Resistant Weed Populations

2012 ◽  
Vol 26 (3) ◽  
pp. 543-548 ◽  
Author(s):  
Joby M. Prince ◽  
David R. Shaw ◽  
Wade A. Givens ◽  
Micheal D. K. Owen ◽  
Stephen C. Weller ◽  
...  
Keyword(s):  
United States ◽  
Weed Management ◽  
Management Practices ◽  
Relative Effectiveness ◽  
The United States ◽  
Effective Management ◽  
Benchmark Study ◽  
Effectiveness Rating ◽  
Grower Survey

In 2010, a grower survey was administered to 1,299 growers in 22 states to determine changes in weed management in the United States from 2006 to 2009. The majority of growers had not changed weed management practices in the previous 3 yr; however, 75% reported using weed management practices targeted at glyphosate-resistant (GR) weeds. Growers were asked to rate their efforts at controlling GR weeds and rate the effectiveness of various practices for controlling/preventing GR weeds regardless of whether they were personally using them. Using the herbicide labeled rate, scouting fields, and rotating crops were among the practices considered by growers as most effective in managing GR weeds. Sixty-seven percent of growers reported effective management of GR weeds. Between the 2005 and 2010 Benchmark surveys, the frequency of growers using specific actions to manage GR weeds increased markedly. Although the relative effectiveness of practices, as perceived by growers, remained the same, the effectiveness rating of tillage and the use of residual and POST herbicides increased.

Benchmark study on glyphosate-resistant cropping systems in the United States. Part 1: Introduction to 2006-2008

2011 ◽  
Vol 67 (7) ◽  
pp. 741-746 ◽  
Author(s):  
David R Shaw ◽  
Micheal DK Owen ◽  
Philip M Dixon ◽  
Stephen C Weller ◽  
Bryan G Young ◽  
...  
Keyword(s):  
United States ◽  
Cropping Systems ◽  
The United States ◽  
Benchmark Study

Benchmark study on glyphosate-resistant crop systems in the United States. Economics of herbicide resistance management practices in a 5 year field-scale study

2014 ◽  
Vol 70 (12) ◽  
pp. 1924-1929 ◽  
Author(s):  
C Blake Edwards ◽  
David L Jordan ◽  
Michael DK Owen ◽  
Philip M Dixon ◽  
Bryan G Young ◽  
...  
Keyword(s):  
United States ◽  
Herbicide Resistance ◽  
Management Practices ◽  
Resistance Management ◽  
The United States ◽  
Field Scale ◽  
Benchmark Study

scholarly journals Carrots and Sticks: Incentives and Regulations for Herbicide Resistance Management and Changing Behavior

Weed Science ◽  
2016 ◽  
Vol 64 (SP1) ◽  
pp. 627-640 ◽  
Author(s):  
Michael Barrett ◽  
Michael Barrett ◽  
John Soteres ◽  
David Shaw
Keyword(s):  
United States ◽  
Herbicide Resistance ◽  
Weed Management ◽  
Cropping Systems ◽  
Wide Spectrum ◽  
Resistance Management ◽  
Herbicide Tolerance ◽  
The United States ◽  
Weed Species ◽  
Agricultural Community

Although the problem of herbicide resistance is not new, the widespread evolution of glyphosate resistance in weed species such as Palmer amaranth (Amaranthus palmeriS. Wats.), common waterhemp (Amaranthus rudisSauer), and kochia [Kochia scoparia(L.) Schrad.] raised awareness throughout the agricultural community of herbicide resistance as a problem. Glyphosate-resistant weeds resulted in the loss of a simple, single herbicide option to control a wide spectrum of weeds that gave efficacious and economical weed management in corn (Zea maysL.), soybean [Glycine max(L.) Merr.], and cotton (Gossypium hirsutumL.) crops engineered for tolerance to this herbicide and planted over widespread areas of the South and Midwest of the United States. Beyond these crops, glyphosate is used for vegetation management in other cropping systems and in noncrop areas across the United States, and resistance to this herbicide threatens its continued utility in all of these situations. This, combined with the development of multiple herbicide-resistant weeds and the lack of commercialization of herbicides with new mechanisms of action over the past years (Duke 2012), caused the weed science community to realize that stewardship of existing herbicide resources, extending their useful life as long as possible, is imperative. Further, while additional herbicide tolerance traits are being incorporated into crops, weed management in these crops will still be based upon using existing, old, herbicide chemistries.

scholarly journals Recent Weed Control, Weed Management, and Integrated Weed Management

2013 ◽  
Vol 27 (1) ◽  
pp. 1-11 ◽  
Author(s):  
K. Neil Harker ◽  
John T. O'Donovan
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Crop Production ◽  
Management Practices ◽  
Cropping Systems ◽  
Arable Land ◽  
The United States ◽  
Integrated Weed Management ◽  
Negative Consequences ◽  
Research Activity

Integrated weed management (IWM) can be defined as a holistic approach to weed management that integrates different methods of weed control to provide the crop with an advantage over weeds. It is practiced globally at varying levels of adoption from farm to farm. IWM has the potential to restrict weed populations to manageable levels, reduce the environmental impact of individual weed management practices, increase cropping system sustainability, and reduce selection pressure for weed resistance to herbicides. There is some debate as to whether simple herbicidal weed control programs have now shifted to more diverse IWM cropping systems. Given the rapid evolution and spread of herbicide-resistant weeds and their negative consequences, one might predict that IWM research would currently be a prominent activity among weed scientists. Here we examine the level of research activity dedicated to weed control techniques and the assemblage of IWM techniques in cropping systems as evidenced by scientific paper publications from 1995 to June 1, 2012. Authors from the United States have published more weed and IWM-related articles than authors from any other country. When IWM articles were weighted as a proportion of country population, arable land, or crop production, authors from Switzerland, the Netherlands, New Zealand, Australia, and Canada were most prominent. Considerable evidence exists that research on nonherbicidal weed management strategies as well as strategies that integrate other weed management systems with herbicide use has increased. However, articles published on chemical control still eclipse any other weed management method. The latter emphasis continues to retard the development of weed science as a balanced discipline.

scholarly journals Managing Wicked Herbicide-Resistance: Lessons from the Field

2018 ◽  
Vol 32 (4) ◽  
pp. 475-488 ◽  
Author(s):  
Jill Schroeder ◽  
Michael Barrett ◽  
David R. Shaw ◽  
Amy B. Asmus ◽  
Harold Coble ◽  
...  
Keyword(s):  
United States ◽  
Herbicide Resistance ◽  
Weed Management ◽  
Crop Production ◽  
Production Systems ◽  
Cropping Systems ◽  
Resistance Management ◽  
Interdisciplinary Approach ◽  
The United States ◽  
The Many

AbstractHerbicide resistance is ‘wicked’ in nature; therefore, results of the many educational efforts to encourage diversification of weed control practices in the United States have been mixed. It is clear that we do not sufficiently understand the totality of the grassroots obstacles, concerns, challenges, and specific solutions needed for varied crop production systems. Weed management issues and solutions vary with such variables as management styles, regions, cropping systems, and available or affordable technologies. Therefore, to help the weed science community better understand the needs and ideas of those directly dealing with herbicide resistance, seven half-day regional listening sessions were held across the United States between December 2016 and April 2017 with groups of diverse stakeholders on the issues and potential solutions for herbicide resistance management. The major goals of the sessions were to gain an understanding of stakeholders and their goals and concerns related to herbicide resistance management, to become familiar with regional differences, and to identify decision maker needs to address herbicide resistance. The messages shared by listening-session participants could be summarized by six themes: we need new herbicides; there is no need for more regulation; there is a need for more education, especially for others who were not present; diversity is hard; the agricultural economy makes it difficult to make changes; and we are aware of herbicide resistance but are managing it. The authors concluded that more work is needed to bring a community-wide, interdisciplinary approach to understanding the complexity of managing weeds within the context of the whole farm operation and for communicating the need to address herbicide resistance.

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